EP2354331A3 - Hydraulic drive device for hydraulic excavator - Google Patents

Hydraulic drive device for hydraulic excavator Download PDF

Info

Publication number
EP2354331A3
EP2354331A3 EP11153786A EP11153786A EP2354331A3 EP 2354331 A3 EP2354331 A3 EP 2354331A3 EP 11153786 A EP11153786 A EP 11153786A EP 11153786 A EP11153786 A EP 11153786A EP 2354331 A3 EP2354331 A3 EP 2354331A3
Authority
EP
European Patent Office
Prior art keywords
control valve
directional control
hydraulic
bucket
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11153786A
Other languages
German (de)
French (fr)
Other versions
EP2354331A2 (en
EP2354331B1 (en
Inventor
Naoki Hagiwara
Yasuo Okano
Tsuyoshi Nakamura
Kouji Ishikawa
Kazunori Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of EP2354331A2 publication Critical patent/EP2354331A2/en
Publication of EP2354331A3 publication Critical patent/EP2354331A3/en
Application granted granted Critical
Publication of EP2354331B1 publication Critical patent/EP2354331B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Emergency Management (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The operability when performing a combined arm-crowd and bucket operation can be improved. A hydraulic drive device for a hydraulic excavator includes: a bucket directional control valve 16 and a second arm directional control valve 18, which are connected in parallel tandem with a first hydraulic pump 11; a first arm directional control valve 21 that is connected to a second hydraulic pump 12; and a flow rate restriction device that restricts the flow rate of pressure oil supplied to the second arm directional control valve 18, during crowd operation of a bucket 6. This flow rate restriction device includes a variable throttle 30 whose opening is controlled so as to become smaller as a bucket operating device 28 is operated to the crowd side, the variable throttle 30 being provided in a bypass path 29a connecting to the supply port of the second arm directional control valve 18.
EP11153786.6A 2010-02-10 2011-02-09 Hydraulic drive device for hydraulic excavator Not-in-force EP2354331B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010028015A JP5079827B2 (en) 2010-02-10 2010-02-10 Hydraulic drive device for hydraulic excavator

Publications (3)

Publication Number Publication Date
EP2354331A2 EP2354331A2 (en) 2011-08-10
EP2354331A3 true EP2354331A3 (en) 2012-02-22
EP2354331B1 EP2354331B1 (en) 2018-05-16

Family

ID=44063744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11153786.6A Not-in-force EP2354331B1 (en) 2010-02-10 2011-02-09 Hydraulic drive device for hydraulic excavator

Country Status (5)

Country Link
US (1) US8919115B2 (en)
EP (1) EP2354331B1 (en)
JP (1) JP5079827B2 (en)
KR (1) KR101755424B1 (en)
CN (1) CN102146692B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5802338B2 (en) * 2011-10-07 2015-10-28 ボルボ コンストラクション イクイップメント アーベー Drive control system for construction equipment work equipment
DE102011119945A1 (en) * 2011-12-01 2013-06-06 Liebherr-Hydraulikbagger Gmbh hydraulic system
JP5927981B2 (en) * 2012-01-11 2016-06-01 コベルコ建機株式会社 Hydraulic control device and construction machine equipped with the same
CN102704525B (en) * 2012-05-21 2014-10-22 徐州徐工挖掘机械有限公司 Hydraulic loop of excavator
CN102734247B (en) * 2012-07-13 2013-04-03 三一重工股份有限公司 Flow control system and method of multi-way directional valve and engineering machinery
CN102808433B (en) * 2012-08-13 2014-07-16 山河智能装备股份有限公司 Hydraulic circuit and method for controlling compound actions of excavator movable arm
EP3165683B1 (en) 2014-07-03 2023-03-22 Sumitomo Heavy Industries, Ltd. Shovel and method for controlling shovel
US20170350096A1 (en) * 2015-01-09 2017-12-07 Volvo Construction Equipment Ab Hydraulic pump control apparatus for construction equipment and control method thereof
EP3290595B1 (en) 2015-04-29 2021-02-17 Volvo Construction Equipment AB Flow rate control apparatus of construction equipment and control method therefor
JP6316776B2 (en) 2015-06-09 2018-04-25 日立建機株式会社 Hydraulic drive system for work machines
CN111465738B (en) * 2017-12-14 2022-05-27 沃尔沃建筑设备公司 Hydraulic machine
JP7083326B2 (en) * 2019-09-30 2022-06-10 日立建機株式会社 Construction machinery
JP7153627B2 (en) * 2019-10-31 2022-10-14 日立建機株式会社 Work machine and perimeter monitoring system

Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS60148366U (en) * 1984-03-12 1985-10-02 株式会社小松製作所 Power shovel hydraulic circuit
EP0715029A1 (en) * 1994-06-28 1996-06-05 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit apparatus for hydraulic excavators
JPH08232301A (en) * 1994-12-26 1996-09-10 Hitachi Constr Mach Co Ltd Hydraulic system of construction machinery
EP0781888A1 (en) * 1995-12-27 1997-07-02 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for hydraulic shovel
US5829252A (en) * 1995-09-18 1998-11-03 Hitachi Construction Machinery, Co., Ltd. Hydraulic system having tandem hydraulic function
EP1672127A2 (en) * 2004-12-16 2006-06-21 Doosan Infracore Co., Ltd. Hydraulic control device for controlling a boom-arm combined operation in an excavator

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Publication number Priority date Publication date Assignee Title
JPS60148366U (en) * 1984-03-12 1985-10-02 株式会社小松製作所 Power shovel hydraulic circuit
EP0715029A1 (en) * 1994-06-28 1996-06-05 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit apparatus for hydraulic excavators
JPH08232301A (en) * 1994-12-26 1996-09-10 Hitachi Constr Mach Co Ltd Hydraulic system of construction machinery
US5829252A (en) * 1995-09-18 1998-11-03 Hitachi Construction Machinery, Co., Ltd. Hydraulic system having tandem hydraulic function
EP0781888A1 (en) * 1995-12-27 1997-07-02 Hitachi Construction Machinery Co., Ltd. Hydraulic circuit for hydraulic shovel
EP1672127A2 (en) * 2004-12-16 2006-06-21 Doosan Infracore Co., Ltd. Hydraulic control device for controlling a boom-arm combined operation in an excavator

Also Published As

Publication number Publication date
US8919115B2 (en) 2014-12-30
US20110192155A1 (en) 2011-08-11
KR101755424B1 (en) 2017-07-10
KR20110093660A (en) 2011-08-18
EP2354331A2 (en) 2011-08-10
CN102146692B (en) 2014-12-31
JP5079827B2 (en) 2012-11-21
CN102146692A (en) 2011-08-10
JP2011163030A (en) 2011-08-25
EP2354331B1 (en) 2018-05-16

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